Explicitly execute fzf command with bash -c; not doing this will break on any non-posix compatible shell

On-MacVim-with-iTerm2.md

@@ -11,7 +11,7 @@ The Applescript API for iTerm2 has changed with version 3.0. This updated script
 
 # update for iterm2 3.0+
 osascript -e \
-'on run argv
+$'on run argv
     tell application "System Events"
         set old_frontmost to item 1 of (get name of processes whose frontmost is true)
     end tell
@@ -22,7 +22,7 @@ osascript -e \
         end
         tell current session of myterm
             write text "cd " & quoted form of (item 2 of argv)
-            write text (item 1 of argv) & " && exit"
+            write text "bash -c \'" & (item 1 of argv) & " && exit\'"
         end tell
         repeat while (exists myterm)
             delay 0.1